What are the major groups of microorganisms?

What are the major groups of microorganisms?

Answer:
There are five major groups of microorganisms:

  1. Bacteria: They are single celled disease-causing microorganisms. They can be spiral or rod-shaped.
  2. Fungi: They are mostly multicellular disease-causing microbes. Bread moulds are common examples of fungi.
  3. Protozoa: They mainly include organisms such as Amoeba, Plasmodium, etc. They can be unicellular or multicellular.
  4. Virus: Viruses are disease-causing microbes that reproduce only inside |the host organism.
  5. Algae: They include multicellular, photosynthetic organisms such as Spirogyra, Chlamydomonas, etc